Finding the Fourth Proportional to 42,153, 63,233.15 and 10,988.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,153 : 63,233.15 = 10,988.25 : x
2. Step 2: Convert to fraction form
   42,153/63,233.15 = 10,988.25/x
3. Step 3: Cross multiply
   42,153x = 63,233.15 × 10,988.25
4. Step 4: Simplify right side
   42,153x = 694,821,605.55
5. Step 5: Solve for x
   x = 694,821,605.55/42,153
6. Step 6: Final answer
   x = 16,483.33